Wood grooving machine



Feb.2o,1951

Filed July 8, 1949 G. BALAzs Y WOOD GROOVING MACHINE 3 Sheets-Sheet 1'WWW Feb. 20, 1951 G. BALAzs WOOD GROOVING MACHINE Filed July 8, 1949 3Sheets-Sheet 2 INVEN TOR.

GEORGE BALZ5 W www M WA Feb. 20, 1951 G. BALAzs woon GRoovING MACHINE 3Sheds-Sheet 3 Filed July 8, 1949 INVENTQR GEORGE BALAzs Patented Feb.20, 1951 WOOD GROOVING MACHINE George Balzs, New York, N. Y., assignorof twenty per cent to Anna Matyi, New York,

Application July s, 1949, serial No. 109,669

This invention relates to new and useful improvements in wood Workingmachines, and, more particularly, the daim is to provide a novel andvaluable such machine characterized by simplicity of construction,reliability in operation, ease, quickness and convenience of adjustmentfor performance of a particular job of mortising, grooving or routingcontemplated, and effectiveness and rapidity of operation in doing thework.

The invention consists in the details of construction, and in thecombination and arrangement of the several parts of my improved Woodworking machine, whereby salient advantages are present, as will belowfully appear.

For further comprehension of the invention, and of the objects andadvantages thereof, `reference will be had to the following descriptionand accompanying drawings, and to Vthe appended claims in which thevarious novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

Fig. 1 frontally perspectively shows a now favored embodiment of themachine of 'the present invention.

Fig, 2 is a vertical section, taken substantially on the line 2 2 ofFig. 1. f Fig. 3 is also a vertical sectional view taken on the line 3 3of Fig. 1; the upper element here shown being a Work holding tablereciprocable back and forth in the directions indicated at A in Fig. 1.

Fig. e is a top perspective view of a slide seen also in Figs. 1-3,reciprocable back and forth in the directions indicated at B in Fig. 1;said slide having fixed to the top thereof a pair of guide rails forsaid table.

Fig. 5 is a bottom perspective View of said (slide.

Fig. 6 shows in perspective a shelf structure vertically reciprocablycarried bythe-front of the main frame of the machine, said shelf forguidingly mounting said slide.

Fig. 7 is a View similar to Fig. 3, but on a reduced scale, for showingsaid table in the entirety of its length and also for showing certainparts operatively associated with the table.

A- Fig. 8 is a bottom perspective of said table.

Fig. 9 is an enlarged fragmentary detail View, taken on the line 9 9 ofFig. 1.

Fig. 10 is a rear elevation of the machine.

Fig. 11 is a perspective view of a piece of work prepared on the machineof the present invention.

Referring now to the drawings more in detail, and by reference numerals,the main fram- 4 Claims. (Cl. 1114-136) ing of the machine, shown as acasting shaped to provide generally a box-shaped housing 2li.

The housing carries a shelf 2l, a slide 22 and a table 23. Mounted onthe table 23 there are spaced work holding clamps 24. Y

Suitably secured on the top of the slide 22 are a pair of ribs 25, theseof dovetail cross-section, and constituting the rails aforesaid; saidribs fitting in grooves 25a at the bottom of and extendinglongitudinally of the table. Laterally of the slide 22, and parallelwith the ribs 25, there is a groove 26 the utility of which will shortlybecome clear.

The lower front wall portion 26a of the housing 28 has a vertical slot21 spaced from opposite sides of which are fixed a pair of L-shapedtrack members 28 for guidingly engaging the opposite side edges of arearsuitably machined plate 29 integral with the shelf 2l.

A capped stud 3e is provided, the shank of which extends through theslot 21 and also through an aperture in the plate 29; said stud beingthreaded into a nut traveller y3l on a suitably journalled verticalscrew 32 fast on the upper end portion of which is a bevel gear 33meshing with a similar gear 34 on a horizontal shaft 35 extended from aside of the machine and beyond aside Wall of the latter xedly carrying acrank handle 36.

In the hollow rounded top portion 31 of the housing 20 are suitablymounted ball bearings 38 and 39 for a shaft 4B. Said shaft at the rearof the machine is desirably provided with a stepped f pulley, not shown,for receiving a belt drive from a suitable power source, as an electricmotor mounted adjacent to the machine or on a supporting plate or thelike secured to the housing 20. The forward end of said shaft 4i)carries a chuck 4l, for holding a desired type of cutting tool, ras therouting tool indicated at 42.

By means of the said crank 36, the shelf 2 I, the slide 22 and the table23, together with the piece of work suitably clamped on the table, maybe raised or lowered relative to the field of whirl of the tool 42, asfor cutting a slot 43a in the work piece 43. The work piece 43 isindicated in dot and dash lines in Fig. 2; the arrangement being such,it will be noted, that the slot 43a will longitudinally extend laterallyof the table 23 and said slot will have the outer end thereof at an edgeof the work piece on a portion of the latter closest to the front planeof the machine. The Width of said slot is predetermined by the height towhich the shelf 2| is raised.

For rectilinearly adjusting the slide 22, in terms d of its shiftabilityas per the arrow B of Fig. 1, thereby to predetermine the depth of theslot 43a there is provided a handwheel 44 xed on a shaft 45incorporating a screw 46 engaging a thread in a tapped hole 4l extendedthrough and longitudinally of an upstanding rib 48 on the shelf 2|, thisrib accommodated in a groove 49 formed inthe bottom of the slide 22. Theback and forth movements of the slide 22 being guided.

by rails l of L-shaped cross-section on the shelf 2l.

For rectilinearly adjusting the table 23 relative to the slide 22 and interms of the shftability of said table as per the arrow A of. Fig.` 1,thereby to" predeterminedly transform the; initiallyl uuty groove into achannel of the desired width, a

crank 52 is fixed on the front end` of ashaft 53v suitably journalled bymeans including a block t gaging said slide for limiting movement ofsaid table on said slide within the extremes of said limit stops forcontrolling the lateral extent of thecut: effected inthe workpiece bythe routing tool, and stop. means on the housing for engaging the rearedge of the workpiece to limit rearward movement of said slide on theshelf to 1 .control the depth of the cut made in the workmember 54 xedon the shelf 22. The innerend.

of the shaft 53 carries a spur pinion 55, which with rack 5B secured tothe underside of the table 23 and accommodated in the groove 26 in thetop of the slide 22.

For limiting the amplitude of such shift of the table 23, as for takingcare of the situation where a plurality of work pieces are to begrooved, routed or channelled all alike, a suitable plurality of threadcarrying like stop pins 5-1 are provided, these for temporary selectiveuse relative to different ones of matchingly threaded holes 58 in thebottom of the table 23 to strike the sides of the slide 22 as the tableis shifted longitudinally. Thus for any particular job,r whether it befor the cutting of a single work piece or for the identical cutting ofany plurality of workv pieces, the width of the channel may quickly andunerringly cut' precisely as desired.

Further, the safe maximum amplitude of endwise movement of the table-23- is protectively provided for, by the use of a pair of stopV blocks59 spaced along thefront edge of said table for coaction with a stop Si!fixed on the slide These blocks 59 and stop Si) are so located as tokprevent the clamps 24 from being brought into contact with the routingtool 42 when the pins .1.

5T are not in use.

AlsoA for adjustably limiting movement of the slide 22 toward the maincasting 2Q, thereby to set the machine for cutting the slot Nietoprecisely the depth desired, that is, with a dimension in the directionof extension of the axis of the tool 42, a T-shaped stop member 6l isprovided, this slida-ble longitudinally of a breached passageway througha rib-like side enlargement 62 of the housing 2S; and a clamp screw G3is provided for locking the shank of the member 6I in its adjustedposition.

While I have illustrated and describedthe preferred embodiment of myinvention, it isV to be understood that l do vnot limit'myself to thepre1- -cise construction herein` disclosedr and the right is reserved toall changes and modifications com- -ing within the scope of theinventionl asdened in 'the appended claims.

Having thus described my invention, whatI claim as new, and desire tosecure by United States Letters Patent is:

l'. In a routing machine havingavertically elongated housing with a.routing tool extended from the top thereof at the front and. With ashelf vertically slidably mounted onthe front of the housing forvertical adjustment toward and Aaway from the routing tool, a. slideslidably mounted on the shelf for movement forward and .rearwardrelative tothey s he1f,. meanse for: movpiecef by the routing tool.

2. In a routing machine having a vertically elongated housing with aroutingA tool extended from the top thereof at the front and witlrashelf vertically slidably mounted on the front of thev housing` forvertical adjustment toward and away from the routing tool, a slideslidably mounted on the shelf for movement forward and rearward relativetothe shelf,V means for moving said. slide relatively to the shelf, atable of a length greater than. the width of said slide slidably mountedon said slide for longitudinal movement, in a direction laterally ofsaidslide, means. on said table for clamping. a workpiece to. the topface thereof, meansfor' moving said table relative; to` said. slide,limit stops on. said slide and said table for retaining said table frombeing disengaged from said slide by its respective moving means,adjustable stop means on said table engaging said slide for limitingmovelment of said table on said slide. within the extremes of said limitstops for controlling the latral extent of the cut effected` inthe'workpiece by the routing tool, and stop means on the housing forengaging the rear edge ofthe workpiece to limit rearward movement ofsaid slide on the shelf to control the depth. of the Ycut made in theworkpiece by the routing tool,

said limit stops comprising a stop block mounted Avon the slidesubstantially mid-way of its sides and an upwardly projected end portionoverlapping the front of said table, and spaced stop blocks lmountedonthe front of said table and on opposite sides of said first-mentionedstop block.

3. In a routing machine having a vertically elongated housing with arouting tool extended from the top thereof at the front and with a shelfvertically slidably mounted on the front of the housing for verticaladjustment toward `.and away'from the routing tool, a slide slidablymounted on the shelf for movement forward and rearward relative totheshelf, means for moving said slide relative to the shelf', a table of alength .great;r than the width of said slide slidably mounted on saidslide for longitudinal movement in a direction laterally of said slide,means on said table for clamping a workpiece to the top face thereof,means for moving said table rela- 1tive to said slide,` limit stops onsaid slide and said table for retaining Saidtable from beingdis'-engaged from. said slide by its` respective moving gineans, adjustablestop means on said table'Y engaging said slide for limiting movement: ofsaid table on said slide within the extremes ofvsaid .limit stops forcontrollingvl the lateral extent of the. .cut eiected in .the workpieceby the. routing tool, and stop means on the housing for engaging therear edge of the workpiece to limit rearward movement of said slide onthe shelf to control the depth of the cut made in the workpiece by therouting tool, said table having a longitudinally extended line of spacedthreaded holes formed in its bottom face, said adjustable stop meanscomprising stop pins located Von opposite sides oi said slide andselectively threaded into said hol;s.

4. In a routing machine having a vertically elongated housing with arouting tool extended from the top thereof at the front and with a shelfvertically slidably mounted on the front of the housing for verticaladjustment toward and away from the routing tool, a slide Sldablymounted on the shelf for movement forward and rearward relative to theshelf, means for moving said slide relative to the shelf, a table of alength greater than the width of said slide slidably mounted on saidslide for longitudinal movement in a direction laterally of said slide,means on said table for clamping a workpiece to the top face thereof,means for moving said table relative to said slide, limit stops on saidslide and said table for retaining said table from being disengaged fromsaid slide by its respective moving means, adjustable stop means on saidtable engaging said slide for limiting movement of said table on saidslide within the extremes of said limit stops for controlling thelateral extent of the cut eiected in the workpiece by the routing tool,and stop means on the housing for engaging the rear edge ofthe workpieceto limit rearward movement of said slide on the shelf to control thedepth of the cut made in the workpiece by the routing tool, said lattermentioned stop means comprising` a tubular rib-like enlargement formedon the side of the housing above said table, a T-shaped stop memberhaving its shank slidably disposed in said enlargement and its crosshead depended to be engaged by the rear face of the workpiece, and aclamp-screw threaded through the side of said enlargement to abut theshank of said T-shaped stop member securing said T-shaped stop member indesired adjusted positions relative to said enlargement.

GEORGE BALzs.

REFERENCES CITED The following references are of record in the file ofthis patent:

I UNITED STATES PATENTS Number

